AnimatedRects Class Reference

Inheritance diagram for AnimatedRects:

Public Member Functions
	AnimatedRects ()
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	resize (SkScalar winWidth, SkScalar winHeight)
virtual void	unload ()
virtual bool	onChar (SkUnichar c)
virtual bool	onMouse (SkScalar x, SkScalar y, skui::InputState state, skui::ModifierKey modifiers)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
const SkString &	getName ()
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Protected Member Functions
void	load (SkScalar, SkScalar) override
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 24 of file AnimatedRectsSlide.cpp.

Constructor & Destructor Documentation

AnimatedRects()

AnimatedRects::AnimatedRects ( )

inline

Definition at line 26 of file AnimatedRectsSlide.cpp.

                    {
        fName = "animated-rects";
    }

Member Function Documentation

animate()

bool AnimatedRects::animate ( double  nanos )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 59 of file AnimatedRectsSlide.cpp.

                                        {
        float seconds = 1e-9 * nanos;
        if (0.0f != fLastTime) {
            float scale = (seconds - fLastTime) * 60;
 
            for (int i = 0; i < kNumRects; ++i) {
                AnimatedRect& r = fRect[i];
                r.x -= r.speed * scale;
                if (r.x + r.size < 0) {
                    r.x = kWidth + r.size;
                }
            }
        }
 
        fLastTime = seconds;
        return true;
    }

draw()

void AnimatedRects::draw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Implements Slide.

Definition at line 48 of file AnimatedRectsSlide.cpp.

                                         {
        SkAutoCanvasRestore acr(canvas, /*doSave=*/true);
        canvas->clipRect({0, 0, (float)kWidth, (float)kHeight});
 
        for (int i = 0; i < kNumRects; ++i) {
            const AnimatedRect& r = fRect[i];
            canvas->drawRect(SkRect{r.x, r.y, r.x + r.size, r.y + r.size}, fStrokePaint);
            canvas->drawRect(SkRect{r.x, r.y, r.x + r.size, r.y + r.size}, fFillPaint);
        }
    }

load()

void AnimatedRects::load ( SkScalar  , SkScalar    )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 31 of file AnimatedRectsSlide.cpp.

                                           {
        for (int i = 0; i < kNumRects; ++i) {
            fRect[i].x = fRand.nextF() * kWidth;
            fRect[i].y = fRand.nextF() * kHeight;
            fRect[i].size = 10.0 + fRand.nextF() * 40.0;
            fRect[i].speed = 1.0 + fRand.nextF();
        }
 
        fStrokePaint.setAntiAlias(true);
        fStrokePaint.setColor(SK_ColorBLACK);
        fStrokePaint.setStyle(SkPaint::kStroke_Style);
        fStrokePaint.setStrokeWidth(2.0);
        fFillPaint.setAntiAlias(true);
        fFillPaint.setStyle(SkPaint::kFill_Style);
        fFillPaint.setColor(SK_ColorWHITE);
    }

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The documentation for this class was generated from the following file:

• third_party/skia/tools/viewer/AnimatedRectsSlide.cpp